Propeller fan



FIG. 1 is a perspective view of the front, right, and bottom side of a propeller fan showing with the present design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a cross sectional view at a line 16-16 shown in FIG. 2. 

CLAIM The ornamental design for a propeller fan, as shown and described. 